Apparatus for controlling the application and relief of pressure to tanks and other appliances.



A. PRIESTMAN; APPARATUS FOR CONTROLLING was APPLXGATION AND RELIEF OF PRESSURE T0 TANKS AND IIJTHER APPLIANGES.

APPLIGATIOH FILED APR. 16,1907.

7 914,673. Patented Mar. 9, 1909.

2 SHEETS-SHEET 1.

'iFBIESTMA N. GGN'TRQLLING ALPLIUATION AND RELIEF OF PRESSURE T0 TANKS AN? OTHER APPLIANCES.

APPLICAE'KON FILED APR. 16, 1907 914,673.

APPARATUS FOR Patented Mar. 9, 1909.

-State of len'usylvalna,

I- UNITED STATES I ALBERT l'RIERlMAN, OF llIILADELlllIA,

APPARATUS FOR CONTROLLING THE APPLICATION AND RELIEF TANKS AND OTHER APPLIANCES.

No. 914,673. Specification To all whom it may renew-n:

.Be it known that l, Autism lnms'rM.-\N oi the ('ity and county of Philadelphia and have invented an lm .\ppa'ratus lor (ontrolliug the itelief oi iressure to 'lanlts of which the following o'tivement in Apdication and and other km-ilianres, is a speeilieation. y

in many cases where tloid pressure is applied to atanh or other applianee for the Qoi'the eontentsol' t he t that the relief of the pressure should he eontrolled by means indepeni '1 the level has in I relieve the pressure, if it a as not otherwise.

purpose of tori-log material other results, it is neeessary or desirable that such pressure should he applied and relieved at illltl'HllS, and that the moment of relief should he timed, and eoutrolled independently of the means which control the admission.ot the pressure. -'lhis is particularly the or producing ease in sewage forcing apparatus, In whieh sewage is forced from a tank or receptacle hy air pressure admitted to the tank t l1ti\!;lt a Force pipe. The admission of the pressure is usually contr lled automaticallyhy the level ank, but it is necessary lent oi the level of the eontents,so t ha t the. pressure may he maintamed to l'ullv discharge the eontents after llen to sat-h an extent as would it is also controlled. desirable in many cases that the operation of the pressure rerelief may tal e place at and that that interval lievine, deviees s ionld be. timed so that the a lixed interval after the pressure is applied, may he varied and regulated to suit the requirements of the particular ease.

I do not mean'to limit my invention in its applieation to any particular usephut for mrposes of explanation I have shown it applied to a sewage tank or reeep taele for the par )ose of discharging the sew-a e from the tan to a higher level; and int'l iis ease thead'mission ol' the pressure todhe tank is controlleil hy' pneumatic devices eontrolled hy the level of the eontents of the tank.

The invention may he applied for example to the admission of air hlasts at intervals to a log-horn, or to any ease wherethe pressure is to he applied and relieved at intervals and the reliel' is controlled hy means independent ol' those. vihieh eoulrol the admission. The invention, hroadly considered, is not limited to any partieular lorm ol valves and devit-es for eontrolling the pressure pipe. The valves in the pressure pipe may he eonof Letters Patient.

Application filed April 16,

PATENT OFFICE.

or PRESSURE To Patented March 9 1009.

190*]. Serial No. 368,559.

1 trolled either hydrostatically or pneumatically, and l'have' shown both forms inthe drawings. "'lhese. liydrostatiedeviees,however, eonstitute the preferred form in the i present a ipli'ration and therefore are claimed speriliral y as a part of the present invention. in the drawings: Figure 1 is a diagram lillustrati'ng one form of my invention applied to a sewage forcing apparatus, some of l the parts being shown in section; Fig. 2 is a.

\ vertical section enlarged ofthe pneumatically 1 controlled hydrostatic devices for controlling t the hydrostatic valve operating devices shown in Fig. 1; and Fig. 3 is a vertical section of the pnemnatie operating devices showing the same i.-onneeted with the reee taele and with the pneumatic controlling ti;-

l vices which are controlled by the sewage.

l a is any appliance to which the pressure is to he applied at intervals; as shown'it is a forcing tank or receptacle, which receives sewage, and from whzieh the sewtwe is forced through the diseharge pipe (1", w iieh latter may he n'mided with a suitable valve 0.

l i) is the inlet iipe, through whieh the seniwe flows into the tunkpthe inlet is provided with a eheek valve h to prevent hack ilow when pressure is applied to the cylinder or tank to force the sewage out through the pi )e a".

n the particular arrangement shown in Fig. 1, there is a receiver 0 which receives the sewage from the main 0 and discharges it through the pipe I). In some eases this receiver is omitted and the discharge is directly valvev b. (l is the lluid pressure leads from a pressure main, or pressure aceumulator, to the upperpa'rt of the re'eep tar-1e a, and is provided with a suitahle valve (1 and with a vent pipe 0 also provided with a operating the valves-d and 0 so that fluid pressure may lie applied to the tank advhi n the-valve d open and the valve'e isfleloset and that the pressure may the relieved when the valve d is closed and e is open; and to render the apparatus auto malie for admitting pressure, these means toil operating the valves d and Ware control ed by the conditions existingin the tank (1,,i. a. the aeeumulation of sewage therein. fis an inverted hell which may he in the receiver 0, as in Fig. l, or in the tank a, as in Fig. 3. l 'lhis hell is so arranged that air will he romvalve e". Suitable means are employed for,

to the tank .ri througlr the check pipe, \vhieh pressed in it and forced through the air pipe f, when the sewage accumulates in the tank a to a suflicient level to be in condition for discharge.

In the arran ement shown in Fig. 1, after the tank a has ecome filled the sewage will rise in the pipe I) and receiver a and will force air through the bell f and pipe f to the controlling devices of the valve operating mechanism of the pressure pipe.

I do not mean to limit my invention, considered broadly, to any particular form of valve operating mechanism or of controlling devices therefor. In Fig. 1, I have shown hydrostatic means both for operating the valves and for controlling the valve operating means. at and e are res ectively floats connected by suitable levers (l e with -the valves (1 and e respectively, and g is a tank in which the floats d" and e are suspended; this tank is provided with a valved outlet 9'. The floats d and e are suspended at different levels, so that, as the water rises in the tank 9 it will operate first one float and its valve and then the other. In the arrangement shown the connections are such that when the floats d and e are lowered, i. e. when the tank is em ty, the valve e will ,be open and the valve will be closed; the

tank a is then vented and the sewage may flow into it by gravity. As the water rises in the tank g, it will first lift the float e and close the valve e and on reaching a still higher level, it will lift the float d and open the valve (1'; pressure will then be admitted to the tank a through the pressure pipe d and the contents of the tank will be forced out through the pipe a. This condition will continue until the level of the water falls in the tank 9, when the valve (1 will be closed and the valve e opened. It is apparent therefore that the operation of the valve actuating floats d e will depend upon the supply of water in the tank 9. This water is sup lied from a tank It and the flow is contro led by the air pressure in the pipe f leading from the air bell.

In Fig. 2, I have shown one form of devices for thus controlling the supply of water from the tank to the tank 9. e tank It is divided into two compartments h h by a weir or partition h, and is supplied by branches '5 i from the main supply pipe 'L.

These branches are controlled by valves 1. 7: respectively. The air pipe f enters the compartment h with a U bend and the open upturned endis inclosed in a bell 7' connected by a suitable lever j with the valve 1', in the branch 1'. which sup lies the compartment h. The valve'i in t 1e branch to the comartmenl It i s c onneclted by a suitable lever with a float 7p in the com artment h. m is the discharge pipe from t e compartment h; it pro'ects into said com artment and is inclosed y a bell n. The ischarge end of and a suitable valve m".

the pipe m is provided with a seal bend m o is a small vent pipe extending throu 'h the discharge pipe m up through the top oi bell n and terminating in the compartment 7L2 above the lower edge of the bell. The valve i is open when the float k is lowered and is closed by the rising of the float; the valve i is normally closed and is o ened by the rising of the hell 7'. Consequent y when the compartment h is cmptv or the water level in it is low the valve 11" will be open and water will flow llet'l into the compartment h, and fillin it wil flow over the to of the artition h into the compartment 'and wil partiallyfill it to the level at which the float 7c will close the valve 01 Further flow of water is thus stop ed; the hydrostatic head of the column in t ie com artment his not, ho.wever,sul'licient to brea the seal in the dischar e pipe m, and the column will be maintained in the compartment h. When,however, the rise of the sewage in the receiver 0 forces air through the ipe f 'into the inverted bell the valve 1, will opened and water will a ain be admitted to the compartment h. T e moment the water in that compartment attains suflicient height to force the seal, it will be discharged through the ipe or into the tank 9, and rising therein W1 1 first lil' t the float e and close the vent valve e, and then lift the float d and open the valve (1.

Pressure will then be admitted to the tank a I and the sewa e will be forced out three '11 the pipe (1. is the sewa e is discharged t 10 pressure in the bell f and pipe f is relieved and the bell 1' will fall and close the valve 1". At the same time the dischar e of the water from the compartment It will ower the float b and again open the valve 4.". The air pipe 0 permits air to enter the discharge pipe m when the inner end of said air pipe is unsealed for the urpose of again introducing air into the bell n. Meanwhile the water escapes from the tank 9 through the discharge pipe g and as it recedes the floats d and are successively lowered and the valve d is closed and the valve 42' opened. The How from the tank 9 may be controlled by the adjustment of the valve 9 in the discharge pipe g, so that the o eration of the valves (1' e may be timed. hus while the valves de' are operated b means controlled by the condltions in t e sewage tank to admit pressure to the tank for the purpose of forcing out the sewage, theolperation, of those valves for the purpose of r eving the pressure in the tank '18 controlled by means independent of the conditions in the tank, and therefore pressure may be maintained in the tank as long as may be desired irrespective of the fall in the level of the sewage and the conse uent-relief of the pneumatic pressure throng the bell f and pliipef.

In 'g. 3 I have shown means for controlling the pressure pipe :1 pneumatically instead .helow the piston g by n :suiteh of hydrostatieally. p is a valve cylinder having an inlet port p from the pressure lnnin an outlet port p to the vent a, and it part p to the pressure pipe (I. In the upper part of the cylinder is a piston valve q, w ioh =r'ontrols communication between the ports 1) larger dhtmeter than the piston valve q. d

is a. branch pipe from the pressure main d which oommunicetes with 'the-r' liuiler 12 iv port or passageway r. This port or passageway-1*" is cont-rolled t, a, valve 8, normally ,losed by a spring s. Vhen the valve 8 is 0}:4-?-n8(lon pressure from. the branch (I will Puttnd into the rylinder (1. 'lfhe some prrssuro per square int-h \\'i l then be ortinp; oppositely on the pistons (1 end 1,, and by reason of the greater area of the letter the pistons will move iorwnr-l and the vent port p will he closed hy the valve while the: valve (1 will open ('ontmunirution between the ports 1) soul and the air prrssure will he mlmitted to the lul'ijt! pipe (1. I yllDll'Gl 7), through which, when the valve 5' t is tt vent from the is In in rlose: l t l to compressed :ti r inuy escape I until the pressure on the piston (firs reduced (ill suiliriently to in lzle the higher pressure now 'itrtin on the stun valve r to force the 2 pistons lin -la, (.lOSlElfl onnnumrutlon hetwrvn the ports 1) and p and restoring communium tion between to e port p" and the vent port to relieve the pressure in the force pipe U! and tii-nk a The vent t may be regulated by a. valve 1' to ('ontrol the eseepe of the compressed oi r from below the piston q and the time at whioh the vulves q :ind q will lie operotr-td. 'llw operation of the valves (1 q is rv-ontrolled h the valve s end this in turn'is rlmtrolleti hy the conditions, i. e. the neonllllllPl-Llifll of sewage, in the. ton]; a, through the air liellfnnd :tir pipof. As shown the stem 8 is pivoted to n lever (1-, one end of of whii'h is ronnented with :1. pressure motor w lontrollod by the pressure from the :nr pipe] W'hen nu islorrod iromtho hollf through the pipef into the motor eluunher w it. lifts the pressure motor 1''; and rocks the lever 11 on its Ill]! rum it thus opening the valves. It is desirable tlml. the (losing; of the vulva suhould lie imlcpimilenlof the ni-ctiinro'f the n'essure motor in, so that it inoyelose again nmmidiutely alter the piston. 71 has been: opernted, 21ml lor this purpose l. employ the As shown this is'u. hol-l" omplpyod the the valves it will strike the arm It nnd roel;

the bell crimlt so as to remove the l"ulrruin n from under the lever '11. As the lever 11- is then unsupported at its outer end the spring .9 will pull it down and close the valve e. A spring to acting on the hell \"rnnk n 1: maintoins it in normal POSldOH nod viruses tho lolrrumu to reiiugugc the lover u, The (closing of the valve .2 thus huh-pendent oi the operation of the motor w and of the \"(Jllllll ions in the tnnk a. While the valve s rmnsins open the pressure in the r-lnnnlmr p prevents theroturn ol" the nston I," and the operation ol the valves 1 1, undo; it is desirable that that ijiprritt ion should he ilnlepvndi-nt oi the conditions in the tank, it is dosinrhlo tlmt tho ole-one; ol the valve s should also he indopondontof those r-ond itions.

l'n 'ill'll application of the invention illustrated, the menus for rontrolling the valve devirrs to admit pressure through the iipoitare controlled PIIQEUIHHlLl fI-llY througi the hellfn-rul iipof by the level of the r-ontcnls of the ten a, or elurmher 0, hot these n'rrsns may he otherwise controlled, either nutonm-tioully or not, :u-t'ording to the pnrtirnlnr use to which the invention is applied. it will he noted that in any restrl hh rotting: oil' of the pressure, or the venting; ol' the pipe at and ol the trmk or iipplinnrr with whirh-il. is runneicted, is rontrollod h lnmms independent of the menus for admitting the orssurv, null that those means may he so rontrolled ilnit the time or interval that will ellipse lief-ore such pin sure is rut oil' or the piped is vented may he rig-guhtted as may he desired.

ln the form ol' the app: :i-ttlF-i shown in Fig. l in whii'h the llYtliUSitttit (controlling dovires :u e empl yed, the rolielis controlled, lJ the level of the water in tho lnnh end lh-it nuiy'he regulntmlhy tho V'tlVP i to time the operation; in the l'orlu shown in Fig. 3, in which the poounmtio mutt-oiling doviros ere roliol is routrollull lrv tho n'ossure in the rlntmlwr f d (hot is re gn ntod hy the valve t.

'. li'lntt l ('lltllll is its l'ollows: i

l. in nppitrntus l'or o-itrolliu;; n'nd utilizing ilnid n'essnro, the romhinniioo oi :LH :rp plinth-o to whiolr tho i)li':-' :ro is to he applied, at l zlll pressure pipe learning in sitiil ripplimore, lllliiillh to rontrol sa d pipe to ndnnt pressure to sirid itpplinn--u, XltfliLllH external to sitid npp inure huh-prurient of sir-id un ons to :ulmit'lhlid' pressure to tho upplisuro to relii-lv'e the some, mnl timing, iii-virus to t-onlrol suid moons to relieve the pressure in sol-iii uppljnnoe to re 'ulnto tho inlul'vnl ol limo hol'ore the pressure will be relieved.

.2. .In :rpparutus l'or eonl-rolllug end utillzing lluid pressure, the ronrliinnl'i'on iii on :-,.p-

plirtnro to whim-h lho pressure is to he applied, it 'lluid pressure pipilending to tiititl nppli- HINT, valve devices to ('(Hii-i'lil Stl-ltl pipe, meirns external to said npplirnu-o to rontrol isu' appliance, and means to automatically consaid valve devices to admit pressure to said i trol said valve devices to relieve the pressure in said appliance, inde )endent oi' the means to control said valve devices to admit pressure. I

3. In apparatus for controlling and utilizi lug fluid pressure, the combination of an apl pliance to which pressure is to be applied, a l fluid pressure pipe leading to said ap diam-c. valve devices to control said pipe, and means independent of one another and external to l the appliance to automatically control respectively the admission of pressure to the appliance through said pipe and the relief of san pressure.

4. In apparatus for controlling and ntilizl ing fluid pressure, the combination of an apphance in which the iluid pressure is to be applied, a ilnid pressure pi e leading to said appliance, means to contro the admission of pressure to the appliance through said pipe, and means independent of said means to control the admission of pressure and external to said ap )liance to automaticallv control the relief ol the pressure from the appliance throu h said pipe alter a given interval.

5. I n apparatus for controlling and utilizing fluid pressure, the combination of an appliance to which the fluid pressure is to be applied, a fluid pressure pipe leading to said appliance, meanscxternal to said appliance but controlled by the conditions in it to control the admission of pressure to the applil ance through said pipe, and means independent of said means to control the admission of pressure to automatically control the relief of the pressure from the appliance through said ipe after a given interval.

6. n apparatus of the cl'iarac-ter described, l the combination of an appliance to which pressure is to be applied, a pressure pipc loadmg to said appliance, valve devices external to the appliance to control the admission of l ressure to the appliance through said pipe, l'iydrostatic devices to control said valve devices to admit pressure to the ap iliance through isaid pipe, and means to ind epcndently cortrol said valve devices to relieve the pressure in the appliance through said pipe. I i 17. In apparatus ol'the characteialescrited, the combination of an appliance to \vhichl pressureis to be applied, a pressure pipe lcndmg to said appliance, valve devices to control said pipe, liydrostatically opcrated devices! to control said valve devices to apply prcs- I sure to said pipe, pncuniaticall controlled devices to control said hydrostatically operated devices, and means to independently control said valve devices to relieve the pressure in said pipe.

S. In apparatus of the character described, the combination of an appliance to which pressure is to up applied, a pressure pipe loin.- mg to said a pliance, valve dcviccs to control l appliance and pipe to admit pressure to the to relieve the same, hydrostatically operated devices independent of the hydrostatic conditions in the appliance for controlling said valve devices, and means controlled by the conditions in said appliance to control said hydrostatically operated controlling, devices.

9. In apparatus of the character described, the combination f an appliance to which pressure is to be applied, a pressure pipe leading to said appliance, valve devices to control said pressure pipe to admit pressure to the ap liance and to relieve the same, hydrostatiealy o erated devices for controlling said valve tevices, and neumaticall controlled devices controlle b the com itions in the appliance for contro in said hydrostatically operated controlling evices.

10. In apparatus of the character described, the combination of an appliance to which pressure is to be applied, a pressure pipe leading to said appliance, valve devices to control said pressure pipe to admit pressure tothe apiliance, iydrostatically operated devices or operating said valve devices, and pneumatically controlled hydrostatically operated devices for controlling the hydrostatically operated devices for operating said valve devices.

11. in apparatus of the character described, the combination of an appliance to which pressure is to be applied, a pressure pipe leading to said appliance, valve devices to control said pressure pipe to admit pressure to the ap )liancc and to relieve the same, means contro ed by the conditions in the applianco but external thereto for operating said pressure said valve devices to admit pressure to sai pipe, and means inde endent of said means controlled by the con itions in the appliance and also external to the appliance for operating said valve devices to relieve the pressure in the appliance.

12. In apparatus of the character de scribed, the combination of an appliance to which pressure is to be applied, a pressure pipe leading to said appliance, valve devices to control said pressure pipe to admit pressure to the ap lumen: and to relieve the same, means controlled by the conditions in the appliancc but external thereto for operating' said valve devices to admit pressure to the pipe, moans independent of said means controlled by the conditions in the appliance and also external to the appliance for operating said valve devices to relieve the ressure in the pipe, and means to control 1; 6 time of operation of said independent means for op.- orating the valve devices.

13. In apparatus of the character described, the combination of an appliance to which pressure is to be applied, a pressure pipe leading to said appiiance, valve devices to control said pressure pipe to admit presmime sure to the appliance and to relieve the same, a tank, hydrostnticslly controlled devices in said tank for operating said valve devices, means to suppy water to said tank, and means to control the discharge of water from said tank. Q

14. in apparatus of the character described, the combination of an appliance to which pressure is to be applied, a pressure pipe leading to said appliance, vzilve devices to control said pressure pipe to admit pressure to the appliance and to relieve the some, a tank, hydrostatically coi'itrolled devices in said tank for operating said valve devices, a second tank arranged to supply \Yilltl to the first tzink, pneuinutic devices controlled by the conditions in the appliance to control the discharge of water from the second tank to the first, and menus to control the discharge from the first tank.

15. In apparatus for controlling and utilizin liuid pressure, the combination of an i appianfteto which the pressure is to luapplied, a fluid pressure pipe lending to said appliance, means external to said appliance to control said pipe to admit pressure to said appliance, means additional to said means to admit fluid pressure and also external to said appliance independent of the condition therein to relieve the pressure in said ripplimice, and timing devices to control said means to relieve the pressure in said appliance and to regulate the interval of tune before which the pressure will be relieved.

16. In apparatus for controlling and utilizing lluid pressure, the combination ol' an appliance to \vhirlrthc pressure is to he applied, it lluid pressure pipe lending to snid appliance, valvc devices to control said pipe, mcuns cxtcrnnl to said npilizincc to conlrol said valve devices to iulluil. pressure to said appliance, nnd uu-uns additional to said means to control said valv devices to admit pressure and also external to said npplinncc but independent of the condition therein to nutoinulicrilly control snid i'ulrc devices to relieve the pressure in said appliance.

17. in apparatus for controlling zlllll ulilizin lluid pressure, the combination l an app lance to which the lluid pressuriis applied, a lluid pressure pipe lending to said aiplinncc, means to control the admission 0 pressure to the npplinmic through sitid pipe, imd means additional to said means to control the admission of pressure and externel to said appliance but independent of the conditions therein to automatically control the relief of the pressure from the applience through said pipe after it given interval.

15s. in apparatus for controlling and utilizing fluid pressure, the combination of an appliance to which the lluid pressure is to be applied, a iiuid pressure pipe leading to said appliance, means external to said appliance hut controlled by the conditions in it to control the admission ol pressure to the appliance through said pipe, and means :ulditional to said means to control the admission of pressure and independent of the conditions in the appliance to automatically con- [ml the relief of the pressure from the appliance through said pipe after a given interval.

it). in apparatus of the character described, the colnliinution of an appliance to which pressure is to he applied. 21 pressure pipe lending to said appliance, \ulvc devices to control said pressure pipe to admit pressure to the :ipilinnce and to relieve the same,

lllt'ftIlS contro led by the conditions in the appliance but external thereto for operatin said valve devices to admit pressure to sail pipe, and means additional to said means controlled by the conditions in the appliance and also external to the appliance but indeiendent of the conditions therein for operating said valve device to relieve the pressure in the appliance.

20. In apparatus of the character dcserihed. the comhiluition of an appliance to which pressure is to he applied, a pressure pipe lending to said appliance, valve devices 1o control said pressure pipe to admit pressure to the ap linncc and to relieve the some, menus contro led by the rondilions in the appliance hut external thereto for operating said valve devices to admit pressure to said iipc, means additional to said means controlled. hy the conditions in the appliance and also external to thcsippliancc hut independent of the conditions therein for operating suid valve device to relieve the pressure in the appliance. and means to control the time of operation of said means for opcrnting the valve devices to relieve the pressure in the appliance.

in testimony of which invention, l have hereunto set my lnuul.

W it ncsses:

li. M. Kindly. a F. .lhnscoui. 

